<template>
  <div>
    <!-- 面包屑 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>商品编辑</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片 -->
    <el-card>
      <!-- 头部 -->
      <el-row>
        <el-col>
          <el-button type="primary">返回商品列表</el-button>
        </el-col>
      </el-row>
      <!-- 提示 -->
      <el-alert center :closable="false" type="info" title="编辑商品信息" show-icon></el-alert>
      <!-- 步骤条 -->
      <el-steps :active="activeIndex-0" align-center finish-status="success">
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>

      <el-form
        :model="editForm"
        :rules="addRules"
        ref="addRuleForm"
        label-width="100px"
        label-position="top"
      >
        <el-tabs
          v-model="activeIndex"
          :tab-position="'left'"
          :before-leave="beforeTabLeave"
           @tab-click="tabclicked"
        >
           <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="editForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input-number v-model="editForm.goods_price" :min="1" ></el-input-number>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input-number v-model="editForm.goods_weight"  :min="1" ></el-input-number>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input-number v-model="editForm.goods_number"  :min="1" ></el-input-number>
            </el-form-item>
            <el-form-item label="商品分类" prop="goods_cal">
              <el-cascader
               expand-trigger="hover"
                v-model="editForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item :label="item.attr_name" v-for="item in manyData" :key="item.attr_id">
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox :label="item2" v-for="(item2,i) in item.attr_vals" :key="i" border></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item :label="item.attr_name" v-for="item in onlyData" :key="item.attr_id">
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              action="http://127.0.0.1:8888/api/private/v1/upload"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headObj"
              :on-success="onSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <quill-editor v-model="editForm.goods_introduce"></quill-editor>
            <el-button type="primary" @click="add" class="btn">修改商品</el-button>
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
  </div>
</template>

<script>
export default {
  name: "Edit",
  data() {
    return {
      activeIndex:0,
      id: this.$route.params.id,
      cateList:[],
      cateProps: {
        value: "cat_id",
        label: "cat_name",
        children: "children"
      },
       /* 添加商品信息 */
      editForm: {
        goods_name:'',
        goods_price:0,
        goods_weight:0,
        goods_number:0,
        goods_cat:'',
        pics:[],
        goods_introduce:'',
        attrs: []
      },
      headObj: {
        Authorization: window.sessionStorage.getItem("token")
      },
      data: {},
       /* 添加商品规则 */
      addRules: {
        goods_name: [
          { required: true, message: "请输入商品名称", trigger: "blur" }
        ],
        edit_price: [
          { required: true, message: "请输入商品价格", trigger: "blur" }
        ],
        edit_weight: [
          { required: true, message: "请输入商品重量", trigger: "blur" }
        ],
        edit_number: [
          { required: true, message: "请输入商品数量", trigger: "blur" }
        ]
      },
      manyData: [],
      onlyData: [],
    };
  },
  created() {
    this.getData(this.id);
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get("categories");
      if (res.meta.status !== 200) return;
      this.cateList = res.data;
    },
    async getData(id) {
      const { data: res } = await this.$http.get(`goods/${id}`);
      if (res.meta.status !== 200) return;
      this.data = res.data;
      console.log(res.data);
      
      const info = res.data
      this.editForm.goods_name=info.goods_name
      this.editForm.goods_price=info.goods_price
      this.editForm.goods_weight=info.goods_weight
      this.editForm.goods_number=info.goods_number 
    },
    // 切换时触发
    async tabclicked(){
      if(this.activeIndex==='1'){
         const { data: res } = await this.$http.get(
          `categories/${this.id}/attributes`,
          { params: { sel: "many" } }
        );
        res.data.forEach(item => {
          item.attr_vals =
            item.attr_vals.length == 0 ? [] : item.attr_vals.split(" ");
        });
        this.manyData = res.data;
      }else if(this.activeIndex==='2'){
         const { data: res } = await this.$http.get(
          `categories/${this.id}/attributes`,
          { params: { sel: "only" } }
        );
        if (res.meta.status !== 200) {
          return;
        }
        this.onlyData = res.data;
        console.log(this.onlyData);
        
      }
      
      
    },
    // 切换之前的回调
    beforeTabLeave(activeName,oldActiveName){
       if (oldActiveName === "0" && this.editForm.goods_cat.length !== 3) {
        this.$message({
          type: "error",
          message: "请选择分类"
        });
        return false;
      }
    },
    /* 获取分类数据 */
    handleChange() {
      if (this.editForm.goods_cat.length !== 3) {
        this.editForm.goods_cat = [];
      }
    },
    /* 浏览图片 */
    handlePreview(file) {
      this.dialogVisible = true;
      this.preview = file.response.data.url;
    },
    /* 删除图片 */
    handleRemove(file) {
      console.log(file);
      const fileStr = file.response.data.tmp_path;
      const index = this.editForm.pics.findIndex(item => {
        return item.pic === fileStr;
      });
      this.editForm.pics.splice(index, 1);
    },
    /* 图片 */
    onSuccess(response) {
      const resp = { pic: response.data.tmp_path };
      this.editForm.pics.push(resp);
    },
    add(){
      this.$refs.addRuleForm.validate(async valid => {      
        if (!valid) {
          return this.$message({
            type: "error",
            message: "请填写必要项"
          })
        }
        const form = _.cloneDeep(this.editForm);
        form.goods_cat = form.goods_cat.join(",");
        this.manyData.forEach(item=>{
          const newInfo={
            attr_id:item.attr_id,
            attr_value:item.attr_vals.join(' ')
          }
          this.editForm.attrs.push(newInfo)
        })
        
        this.onlyData.forEach(item => {
          const newInfo = { attr_id: item.attr_id, attr_value: item.attr_vals };
          this.editForm.attrs.push(newInfo);
        })
        form.attrs = this.editForm.attrs;
        const id=Number(this.id)
        console.log(form);
        const {data:res}=await this.$http.put(`goods/${id}`,form)
        console.log(res);
        
        if(res.meta.status!==200){
          return this.$message({
            type:'error',
            message:'修改商品失败'
          })
        }
        this.$message({
          type:'success',
          message:'修改商品成功'
        })
        this.$router.push('/goods')
      })
    }
  }
};
</script>

<style scoped>
.el-alert{
  margin: 20px 0;
  
}
</style>